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Rotation Worksheet - Page 3

Rotation Worksheet
  • Page 3
 21.  
What is the measure of rotation about the point B?


a.
290°
b.
20°
c.
110°
d.
70°


Solution:

A rotation is a transformation that turns the figure about a fixed point.


Mark points P and P'.


Join the points to B and measure the angle of rotation.

The angle of rotation is observed as 70°.


Correct answer : (4)
 22.  
Which of the following is the rotational image of the given figure?

a.
Figure 2
b.
Figure 4
c.
Figure 4
d.
Fihure 3


Solution:

A rotation is a transformation that turns the figure about a fixed point.

The figures 1, 2 and 3 are not the rotational images of the given figure.
[Rotation does not change orientation.]

Figure 4 matches with the given figure and is obtained as a result of rotating it.

So, figure 4 is the correct answer.


Correct answer : (3)

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